... used to characterize the coatings The results showed that the coating annealed at 350oC had the high photoactivity in the photodegradation of methylene blue Trang 15 Science & Technology Development, ... No.6, pp 599-603, (2002) [10] T Sugama, L E Kukacka, N Carciello, J B Warren, Influence of the high temperature treament of zince phosphate conversion coatings on the corrosion protection of...